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Commit 9181837

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Merge pull request #188 from Mcbencrafter/main
[Snippets] java date/time snippets
2 parents 3dee709 + d64cbef commit 9181837

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---
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title: Date time formatting american
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description: Formats a timestamp to a human-readable date-time string in the format "MM/dd/yyyy hh:mm:ss a"
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author: Mcbencrafter
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tags: date,time,date-time,formatting,american
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---
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```java
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import java.time.Instant;
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import java.time.ZoneId;
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import java.time.format.DateTimeFormatter;
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import java.util.concurrent.TimeUnit;
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// using the system default time zone
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public static String formatDateTimeAmerican(long time, TimeUnit timeUnit) {
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return formatDateTimeAmerican(time, timeUnit, ZoneId.systemDefault());
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}
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public static String formatDateTimeAmerican(long time, TimeUnit timeUnit, ZoneId timeZone) {
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return DateTimeFormatter.ofPattern("MM/dd/yyyy hh:mm:ss a")
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.withZone(
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timeZone != null ? timeZone : ZoneId.systemDefault()
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)
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.format(Instant.ofEpochSecond(
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timeUnit.toSeconds(time)
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));
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}
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// Usage:
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System.out.println(formatDateTimeAmerican(1735689599, TimeUnit.SECONDS)); // "12/31/2024 | 11:59:59 PM" for GMT+0000
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System.out.println(formatDateTimeAmerican(1735689599, TimeUnit.SECONDS, ZoneId.of("GMT+0000"))); // "12/31/2024 | 11:59:59 PM"
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```
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---
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title: Date time formatting european
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description: Formats a timestamp to a human-readable date-time string in the format "dd.MM.yyyy HH:mm:ss"
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author: Mcbencrafter
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tags: date,time,date-time,formatting,european
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---
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```java
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import java.time.Instant;
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import java.time.ZoneId;
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import java.time.format.DateTimeFormatter;
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import java.util.concurrent.TimeUnit;
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// using the system default time zone
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public static String formatDateTimeEuropean(long time, TimeUnit timeUnit) {
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return formatDateTimeEuropean(time, timeUnit, ZoneId.systemDefault());
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}
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public static String formatDateTimeEuropean(long time, TimeUnit timeUnit, ZoneId timeZone) {
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return DateTimeFormatter.ofPattern("dd.MM.yyyy HH:mm:ss")
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.withZone(
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timeZone != null ? timeZone : ZoneId.systemDefault()
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)
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.format(Instant.ofEpochSecond(
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timeUnit.toSeconds(time)
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));
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}
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// Usage:
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System.out.println(formatDateTimeEuropean(1735689599, TimeUnit.SECONDS)); // "31.12.2024 | 23:59:59" for GMT+0000
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System.out.println(formatDateTimeEuropean(1735689599, TimeUnit.SECONDS, ZoneId.of("GMT+0000"))); // "31.12.2024 | 23:59:59"
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```
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---
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title: Duration formatting hours minutes seconds
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description: Converts a given time duration to a human-readable string in the format "hh:mm(:ss)"
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author: Mcbencrafter
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tags: time,formatting,hours,minutes,seconds
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---
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```java
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import java.util.concurrent.TimeUnit;
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public static String formatDurationToHoursMinutesAndSeconds(int time, TimeUnit timeUnit, boolean showSeconds) {
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long totalSeconds = timeUnit.toSeconds(time);
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if (totalSeconds < 0)
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throw new IllegalArgumentException("Duration must be a non-negative value.");
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// These variables can be directly used in the return statement,
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// but are kept as separate variables here for better readability.
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long hours = totalSeconds / 3600;
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long minutes = (totalSeconds % 3600) / 60;
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long seconds = totalSeconds % 60;
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if (showSeconds) {
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return String.format("%02d:%02d:%02d", hours, minutes, seconds);
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} else {
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return String.format("%02d:%02d", hours, minutes);
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}
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}
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// Usage:
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System.out.println(formatDurationToHoursMinutesAndSeconds(3810, TimeUnit.SECONDS, true)); // "01:03:30"
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System.out.println(formatDurationToHoursMinutesAndSeconds(3810, TimeUnit.SECONDS, false)); // "01:03"
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```
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---
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title: Duration formatting minutes seconds
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description: Converts a given time duration to a human-readable string in the format "mm:ss"
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author: Mcbencrafter
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tags: time,formatting,minutes,seconds
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---
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```java
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import java.util.concurrent.TimeUnit;
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public static String formatDurationToMinutesAndSeconds(int time, TimeUnit timeUnit) {
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long totalSeconds = timeUnit.toSeconds(time);
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if (totalSeconds < 0)
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throw new IllegalArgumentException("Duration must be a non-negative value.");
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// These variables can be directly used in the return statement,
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// but are kept here as separate variables for better readability.
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long minutes = totalSeconds / 60;
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long seconds = totalSeconds % 60;
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return String.format("%02d:%02d", minutes, seconds);
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}
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// Usage:
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System.out.println(formatDurationToMinutesAndSeconds(120, TimeUnit.SECONDS)); // "02:00"
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System.out.println(formatDurationToMinutesAndSeconds(75, TimeUnit.SECONDS)); // "01:15"
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```

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